Resumen de Phone controls tattooed onto your skin
People intuitively know the location of their own bumps and birthmarks, which makes them ideal locations for touch-sensitive buttons, says Martin Weigel at Saarland University in Saarbrucken, Germany. Weigel's team has used conductive ink to print wires and electrodes on temporary tattoo paper. These are transferred onto skin with water and last a few days before rubbing off. By having the tattoos respond to chances in the skin surface, they can incorporate multiple commands.
